Source: org/terraswarm/accessor/accessors/web/audioIo/AudioIoWavFile.js

// Copyright (c) 2016 The Regents of the University of California.
// All rights reserved.

// Permission is hereby granted, without written agreement and without
// license or royalty fees, to use, copy, modify, and distribute this
// software and its documentation for any purpose, provided that the above
// copyright notice and the following two paragraphs appear in all copies
// of this software.

// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.

// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
// ENHANCEMENTS, OR MODIFICATIONS.

/**
 * @accessor audioIo/AudioIoWavFile
 * @author Ilya Y. Rostovtsev
 * @version $$Id$$
 */

// Stop extra messages from jslint.  Note that there should be no
// space between the / and the * and global.
/*global console, exports, require */
/*jshint globalstrict: true */
"use strict";

var audio, fileInputHander;

audio = require('audio-io');

fileInputHander = null;

exports.loadFile = function () {
    this.send('wavdata', audio.loadwav(this.get('wavfile')));
};

exports.setup = function () {
    this.input('wavfile', {
        type: 'string'
    });
    this.output('wavdata', {
        type: 'json'
    });
};

exports.initialize = function () {
    fileInputHander = this.addInputHandler('wavfile', this.exports.loadFile.bind(this));
};

exports.wrapup = function () {
    audio.wrapup();
    this.removeInputHandler('wavfile', fileInputHander);
};